using System;
using System.Collections.Generic;
using System.Text;

namespace ConsoleApplication4
{
    public delegate void OnClick(int x,int y);
    class Program
    {
        static void Main(string[] args)
        {
            Ventana v1 = new Ventana();
            Boton b1 = new Boton();
            OnClick click = new OnClick(v1.OnClick);
            click += b1.OnClick;
            //...
            click(22, 24);
        }
    }
}
